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Kanchan: Difference between revisions
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Kanchan is awarded 2 fu upon winning. A closed hand winning by ron automatically becomes [[mangan]], if it scores 4 han. | Kanchan is awarded 2 fu upon winning. A closed hand winning by ron automatically becomes [[mangan]], if it scores 4 han. | ||
==Ryankan== | |||
A '''ryankan''' is an extended form of a kanchan, only available before reaching tenpai. A ryankan shape is composed of three tiles that are each 2 apart, such as: | |||
A '''ryankan''' is an extended form of a kanchan. A ryankan shape is composed of three tiles that are each 2 apart, such as: | |||
{| class="wikitable" | {| class="wikitable" | ||
| Line 29: | Line 26: | ||
| align=center| {{#mjt:246p}} || align=center| {{#mjt:357p}} || align=center| {{#mjt:468p}} | | align=center| {{#mjt:246p}} || align=center| {{#mjt:357p}} || align=center| {{#mjt:468p}} | ||
|- | |- | ||
Tiles to complete | !Tiles to complete | ||
|align=center| {{#mjt:35p}} || align=center| {{#mjt:46p}} || align=center| {{#mjt:57p}} | |align=center| {{#mjt:35p}} || align=center| {{#mjt:46p}} || align=center| {{#mjt:57p}} | ||
|} | |} | ||
| Line 41: | Line 38: | ||
{{#mjt:12344m23789p246s}} | {{#mjt:12344m23789p246s}} | ||
With the example hand above, if you drew {{#mjt:1p}}, you would have to discard either {{#mjt:2s}} or {{#mjt:6s}} to enter tenpai. | With the example hand above, if you drew {{#mjt:1p}}, you would have to discard either {{#mjt:2s}} or {{#mjt:6s}} to enter tenpai. You end up with a bad wait, but with one major advantage - a kanchan wait is always a [[suji]] trap. Here, if you discarded the 6s, you would wait on the suji 3s, thus making it more likely for others to deal in. This is why a suji of the [[riichi]] declaration tile is considered more dangerous. | ||
==Strategy== | |||
Kanchan is considered to be a "bad wait", because it can only wait for a maximum of 4 tiles. Thus, they are worse for [[tile efficiency|hand development]]. Like the other bad waits, kanchan can be used to "[[Suji#Offense|suji trap]]" opponents. | |||
===Kanchan vs Penchan=== | ===Kanchan vs Penchan=== | ||
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*A {{#mjt:12p}} penchan cannot be upgraded to ryanmen on its own. It must first draw a {{#mjt:4p}}, turning it into a {{#mjt:24p}} kanchan, then draw the {{#mjt:5p}} to get a ryanmen. | *A {{#mjt:12p}} penchan cannot be upgraded to ryanmen on its own. It must first draw a {{#mjt:4p}}, turning it into a {{#mjt:24p}} kanchan, then draw the {{#mjt:5p}} to get a ryanmen. | ||
As a kanchan requires 1 tile to be upgraded to a ryanmen, but a penchan requires 2 tiles, the kanchan is superior to keep before tenpai. In addition, only a kanchan can be turned into a ryankan shape, giving another advantage to kanchan. However, once you reach tenpai, both kanchan and penchan become effectively identical. | As a kanchan requires 1 tile to be upgraded to a ryanmen, but a penchan requires 2 tiles, the kanchan is superior to keep before tenpai. In addition, only a kanchan can be turned into a [[#Ryankan|ryankan]] shape, giving another advantage to kanchan. However, once you reach tenpai, both kanchan and penchan become effectively identical. | ||
===Inner vs Outer Kanchan=== | ===Inner vs Outer Kanchan=== | ||
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|- | |- | ||
!Inner | !Inner | ||
|{{#mjt:35p}} || {{#mjt:46p}} || {{#mjt:57p}} | |{{#mjt:35p}} || {{#mjt:46p}} || {{#mjt:57p}} || | ||
|- | |- | ||
!Outer | !Outer | ||
| Line 67: | Line 67: | ||
Inner kanchans are generally superior to outer kanchans because they are easier to upgrade. This is similar to how (all) kanchans are better than penchans, as kanchans are easier to upgrade. | Inner kanchans are generally superior to outer kanchans because they are easier to upgrade. This is similar to how (all) kanchans are better than penchans, as kanchans are easier to upgrade. | ||
*A {{#mjt:35p}} kanchan can be upgraded by drawing {{#mjt:2p}} (turning into {{#mjt:23p}}) OR {{#mjt:6p}} (turning into {{#mjt:56p}}). It can also be turned into [[ | *A {{#mjt:35p}} kanchan can be upgraded by drawing {{#mjt:2p}} (turning into {{#mjt:23p}}) OR {{#mjt:6p}} (turning into {{#mjt:56p}}). It can also be turned into a [[#Ryankan|ryankan]] when drawing either {{#mjt:1p}} or {{#mjt:7p}}. | ||
*A {{#mjt:24p}} kanchan can only be upgraded by drawing {{#mjt:5p}}. | *A {{#mjt:24p}} kanchan can only be upgraded by drawing {{#mjt:5p}}. It can be turned into a ryankan when drawing {{#mjt:6p}} only. | ||
Note that | Note that an inner kanchan waits on a middle tile. Middle tiles are harder to win with, so there's some downside to using them. | ||
==External links== | ==External links== | ||